kpopsaranghae kpopsaranghae
  • 02-11-2018
  • Mathematics
contestada

The length and width of a rectangle are 7 cm and (x-8) cm respectively. Find the value of x if the area with of the rectangle is 42 cm squared.

Respuesta :

popholmes16 popholmes16
  • 02-11-2018

to find the area of a rectangle is LxW=A

plug in the given numbers you have

L = 7

W = x-8

A = 42

7 * x-8 = 42

7x-56= 42

solve for X

Answer Link

Otras preguntas

The civil rights bill of 1866
The following is a function, g(x). g(x)= x to the second power - 10 what is the value of g(-5)?
What was the Northern states' argument for enslaved men NOT counting towards population?
(5y + 2x - 5) - (2y - 2x - 5) HELP MEHHHH!! (please)
Solve for x in the equation 3x + 8 = x - 12.​
The table below compares different levels of government. Level Federal Legislative Congress Executive President State Florida State Legislature Board of Commiss
Giovanni spent a total of $13.75 bowling. he rented bowling shoes for $ 2.50 and bowled 3 games. Each game cost the same amount.
Balance the following reaction: _(NH4)2CO3 + _MgSO4 ----> _(NH4)2SO4 + _MgCO3
Are the two triangles similar? 18 20 16 12 15 24
4^4\cdot 4^3=4 4 ⋅4 3